<!DOCTYPE html>
<html lang="zh">

<head>
    <title></title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
    <link href="../css/style.css" rel="stylesheet"> </head>

<body>
<div id="myApp">
    <h1 v-if="result == 0">成绩未公布</h1>
    <h1 v-else-if="result < 60">{{result}}分 - 考试不及格</h1>
    <h1 v-else-if="result < 80">{{result}}分 - 还需努力</h1>
    <h1 v-else>{{result}}分 - 考得不错，玩游戏吧！</h1>
    <button @click="btnClick">考试成绩</button>
</div>
<script>
    var myApp = new Vue({
        el: '#myApp', 
        data: {
            result: 0
        },
        methods: {
            btnClick: function(){
                this.result = Math.round(Math.random() * 100);
            },
        },
    });
</script>
</body>

</html>